ltjdlow



(No Model.)

W. I.. LUDLOW.

STAPLE TACK BLANK.

No. 450,246. Patented Apr. 14, 1891.

'Inveyfor UNITED STATES PATENT OFFICE. I

VASHINGTON I. LUDLO\V, OF CLEVELAND, OHIO, ASSIGNOR TO THE CLEVE- LAND YVINDO\V SHADE COMPANY, OF SAME PLACE.

STAPLETACK BLANK.

SPECIFICATION forming part of Letters Patent No.450,246, dated April 14, 1891.

Application filed July 8, 1890. Serial No. 358,109- (No model.)

To all whom it may concern.-

Be it known that I, WASHINGTON I. LUD- LOW, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented new and useful Improvements in Staple-Tack Blanks, of which the following is a specification.

This invention relates to staple-like tacks of the type employed for carpets and similar articles, and particularly the kind adapted for use in the carpet stretcher and tacker for which I filed an application for Letters Patent SeptemberG, 1889, Serial No. 323,191.

The invention has for its object to provide a novel staple-blank v wherein a series of partly shaped or fashioned staple-tacks are separably united by their heads or upper surfaces and are of uniform size and shape throughout the blank, sothat by separating the blank at uniform distances apart on transverse parallel lines the blank is converted into detached staples for immediate use.

The invention also has for its object to provide a novel staple-blank which can be made to straddle the tack-carrier bar of a carpettacker and the staples successively severed on parallel lines at uniform distances apart as they are driven by the hammer-head or driver into the carpet.

The invention also has for its object to utilize the waste scraps of thin metal sheets in the manufacture of staple-tack blanks to be used in the carpet-tackin g apparatus disclosed in my application hereinbefore referred to.

To accomplish all these objects my invention involves the features of construction and the principles hereinafter described, and specifically set forth in the claim, reference being made to the accompanying drawings, in which- Figure 1 is a perspective view of a stapletack comb-blank constructed according to my invention. Fig. 2 is a transverse sectional view of the same.

In order to enable those skilled in the art to make and use my inventioml will now describe the same in detail, referring to the drawings, wherein-- The numeral 1 indicates the back or web which represents the heads or upper surfaces of all the staples, the latter being completed by the pointed side extensions 2, which are pendent and stand at right angles to the head or web 1, whereby the comb-blank is shaped approximately like the letter U in cross-section. By this means I provide a staple-tack blank comprising a series of partly-formed staples separably joined on transverse lines which intersect the angles of the V-shaped notches between the staple-prongs.

To accomplish the purposes of my invention the prongs or shanks of the staples must all betapering or \l-shaped and of uniform shape and dimensions, and likewise the notches which separate one pair of staple-prongs from another must be V-shaped, and the counterparts of the prongs or shanks and all these notches must be uniform and coextensive in dimension with each other and with the prongs or shanks. By thisvmeans I am enabled to separate the blank into individual staples by severing it on transverse parallel lines at uniform and regular distances apart. This is essential and important to permit the blank or series of connected partly-formed staples to be set straddled on a tack-carrier bar and to be severed at regular intervals as they are driven into a carpet or like article by the hammerhead or driver of the tacking apparatus.

The formation of the blank with pendent side flanges each formed with alternating V- shaped prongs and notches, all of which are coequal or coextensive as regards dimensions and shape or form, constitutes a useful article to provide the required working material in a carpet-tacker. The apex of each V- shaped notch is in the continuous back or Web 1, and these pointed terminations of the notches in the back or web at one side thereof 0 are in alignment, respectively, with the pointed terminations of the notches in the back or web at the opposite side; This termination of the V-shaped notches in the longitudinal back or web completes the true 5 staple form and provides gages for the correct division of the comb-blank into individual staples.

The metal from which the blank is formed is thin, flexible, and easily bent and cut, whereby it is possible to successively sever the staples by the driving action of the hammer or driver in my tacking apparatus alluded to.

Havingthus described my invention, what I claim is- 5 As an improved article of manufacture, the herein-described staple-tack blank of thin flexible metal, comprising a continuous Web having pendent side prongs and V-shaped notches coequal in dimensions and constitut- IO ing a series of partly-formed staples separately joined on transverse lines which intersect the angles of the V-shaped notches, so that by dividing the blank on said lines at uniform distances apart complete staples are produced, substantially as and for the purposes set forth.

In testimony whereof I have affixed my signature in presence of two Witnesses.

WASHINGTON I. LUDLOW. Witnesses:

EDWARD J. MAGUIRE, DANIEL R. TAYLOR. 

